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drm/bridge: ps8640: Print an error if VDO control fails

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Print an error message inside ps8640_bridge_vdo_control() function when
it fails so we can simplify a bit the callers, they will only need to
check the error code.

Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Bilal Wasim <bwasim.lkml@gmail.com>
Tested-by: Bilal Wasim <bwasim.lkml@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200826081526.674866-5-enric.balletbo@collabora.com
This commit is contained in:
Enric Balletbo i Serra 2020-08-26 10:15:25 +02:00 committed by Sam Ravnborg
parent 812a65ba94
commit 94d4c13233
1 changed files with 6 additions and 7 deletions
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13
drivers/gpu/drm/bridge/parade-ps8640.c
View file

@ -82,8 +82,11 @@ static int ps8640_bridge_vdo_control(struct ps8640 *ps_bridge,
ret = i2c_smbus_write_i2c_block_data(client, PAGE3_SET_ADD,
sizeof(vdo_ctrl_buf),
vdo_ctrl_buf);
if (ret < 0)
if (ret < 0) {
DRM_ERROR("failed to %sable VDO: %d\n",
ctrl == ENABLE ? "en" : "dis", ret);
return ret;
}
return 0;
}
@ -150,10 +153,8 @@ static void ps8640_pre_enable(struct drm_bridge *bridge)
}
ret = ps8640_bridge_vdo_control(ps_bridge, ENABLE);
if (ret) {
DRM_ERROR("failed to enable VDO: %d\n", ret);
if (ret)
goto err_regulators_disable;
}
/* Switch access edp panel's edid through i2c */
ret = i2c_smbus_write_byte_data(client, PAGE2_I2C_BYPASS,
@ -175,9 +176,7 @@ static void ps8640_post_disable(struct drm_bridge *bridge)
struct ps8640 *ps_bridge = bridge_to_ps8640(bridge);
int ret;
ret = ps8640_bridge_vdo_control(ps_bridge, DISABLE);
if (ret < 0)
DRM_ERROR("failed to disable VDO: %d\n", ret);
ps8640_bridge_vdo_control(ps_bridge, DISABLE);
gpiod_set_value(ps_bridge->gpio_reset, 1);
gpiod_set_value(ps_bridge->gpio_powerdown, 1);